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⚡ Ignite your ride with Motorcraft’s precision spark!
The Motorcraft SP588 spark plug features a copper core and 14mm thread size, designed specifically for motorcycles. Lightweight and compact, it offers reliable ignition performance backed by Motorcraft’s trusted OEM quality standards.


| Asin | B09GWB5KY6 |
| Best Sellers Rank | #1,032,815 in Automotive (See Top 100 in Automotive) #5,033 in Automotive Replacement Spark Plugs |
| Brand Name | Motorcraft |
| Compatible With Vehicle Type | Motorcycle |
| Core Material | Copper |
| Customer Reviews | 4.1 4.1 out of 5 stars (7) 4.1 out of 5 stars |
| Included Components | Spark Plug |
| Item Type Name | Spark Plug |
| Manufacturer | Motorcraft |
| Manufacturer Part Number | SP588 |
| Model Number | SP588 |
| Oem Equivalent Part Number | SP588 |
| Thread Size | 14mm |
| Top Material Type | Copper |
| Unit Count | 1 Count |
| Upc | 031508140592 |
User
Good buy
Always seem to be a good plug.
User
Good
Works great- seller shipped quickly
User
Perfect for my 2021 Ford F150 5.0
I recently installed these spark plugs in my 2021 Ford F-150 with the 5.0 V8, and I'm thoroughly impressed. They seamlessly matched the OEM specifications and came pre-gapped, which was a convenient touch, although I made sure to verify the gap myself — a step I'd recommend to anyone. The new plugs immediately resolved a minor misfire issue, a significant improvement given the extensive idling I do with my truck. While I haven't monitored the fuel economy closely, the overall performance boost has left me very satisfied with this purchase.
Trustpilot
2 weeks ago
3 days ago